We're working for a contractor and we designed a sheet piling wall that requires 35' sheet piles to support a 10' SOE. Today, the contractor said 35' sheets would be a special order. I can appreciate his dilemma because he has to drive 1/2 mile of sheeting and it's on the critical path. He's proposing to alternate 30' and 40' sheets, which are readily available. To me it sounds OK in theory but it would require some careful thought in the analysis. My question: Has anyone done this before?
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